Tex, I do the same thing. I shake them from the ultrasonic then right into corncob. Works great!

But I must say op, I've been down your road with around 900-1000 cases of 9mm before. My problem was I put in new media with new polish and didn't give it enough time to mix thoroughly. I'll NEVER make that mistake again. It probably took me over an hour to dig the media out of the cases.